<!DOCTYPE html>
<html lang="zh-cmn-Hans">
<head>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
    <title>Title</title>
</head>
<body>
<div style="margin:17% auto; width: 10%">
    <p style="font-size: 100px">400</p>
</div>
</body>
</html>